Mehyar Fahed, Spitznagle Theresa M, Sharma Neena K
University of Kansas Medical Center, Mailstop 2002, 3901 Rainbow Blvd, Kansas City, KS 66160, USA. Tel 913-588-4566, fax 913-588-6910.
J Allied Health. 2017 Fall;46(3):154-157.
Ultrasound imaging is a widely used method for viewing musculoskeletal tissues. However, capturing movies of lumbar multifidus (LM) muscle with ultrasound imaging (video method) is a relatively new method, and its reliability has not been fully tested. The objective of this study was to compare the intra-rater reliability of two methods of ultrasound imaging of LM muscle, the traditional method (static images) and the video method, in healthy subjects conducted by a novice rater.
Images of LM thickness in 15 healthy subjects were captured and measured by static images and video methods. Intra-class correlation coefficient (ICC) with 95% confidence interval, standard error of measurement, and minimal detectable change were calculated to determine the reliability and precision of the LM thickness measurements.
Excellent intra-rater reliability was demonstrated in measuring LM muscle thickness using both methods, with the intra-rater ICC ranging from 0.75 to 0.95.
The reliability of the LM thickness measurements in video ultrasound is similar to that in the static images method in healthy subjects.
超声成像为观察肌肉骨骼组织的常用方法。然而，利用超声成像获取腰多裂肌（LM）的动态影像（视频法）是一种相对较新的方法，其可靠性尚未得到充分验证。本研究的目的是比较新手评估者采用传统方法（静态图像）和视频法这两种超声成像方法测量健康受试者LM肌肉时的评估者内信度。
采用静态图像和视频法对15名健康受试者的LM厚度进行图像采集和测量。计算组内相关系数（ICC）及其95%置信区间、测量标准误差和最小可检测变化，以确定LM厚度测量的可靠性和精密度。
两种方法测量LM肌肉厚度均显示出良好的评估者内信度，评估者内ICC范围为0.75至0.95。
在健康受试者中，视频超声测量LM厚度的可靠性与静态图像法相似。
